Over the last couple of weeks or so, my DD (2.10) has developed dry crusty yellow residue on her hairline. Think it may be cradle cap. She had this as a baby but it cleared up when I used olive oil. Now when I do this it pulls chunks of her hair out! It looks like it has rotted the root of her hair. I'm worried that if I pull it all out she will have a bald patch along her hairline. Any advice?